Ua rau muaj kev kub ntxhov:
1. Cov ntaub ntawv nyoos yog ib yam dab tsi kub hnyiab tau, muaj tshuaj lom thiab flammable;
2. Cov tshuaj tiv thaiv hauv kev tsim muaj nyob rau hauv kev mob hnyav xws li kub, siab thiab tswb;
3. Corrosion ntawm nruab nrab, kev hloov ntawm cov txheej txheem tsis muaj zog, khoom siv hluav taws xob los ntawm kev sib tsoo ntawm cov khoom siv hluav taws xob;
4. Ua haujlwm yuam kev, cov txheej txheem khiav lag luam txhaum cai, thiab lwm yam.
Ceev faj:
1. Lub phiaj xwm yuav tsum siv kev txheeb xyuas kev nyab xeeb thiab kev ntsuam xyuas cov txheej txheem xws li kev nyab xeeb thiab kev tiv thaiv ib puag ncig hauv cov theem pib ntawm qhov kev pom zoo;
2. Lub tuam tsev siv cov qauv tshwj xeeb txog kev tiv thaiv hluav taws thiab pom tag nrho cov txheej txheem khiav thiab khoom;
3. Rau cov haujlwm uas muaj feem yuav ua haujlwm xws li kev kub ntxhov, nws yog ib qhov tsim nyog yuav tau siv cov txheej txheem kev pom zoo thiab kev ntsuam xyuas;
4. Cov cai tswjfwm kev kawm thiab kev cob qhia yuav tsum raug coj los siv rau cov neeg ua haujlwm ntawm cov tshuaj phem.
